含砜基及桥联结构聚酰亚胺的合成及其性能研究  

Synthesis and characterization of polyimide containing sulfuryl group and bridge chain

作　　者：晁敏[1] 颜录科[1] 王豪[1] 宋家乐[1] 魏俊基[1] 寇开昌[2] Chao Min Yan Luke Wang Hao Song Jiale Wei Junji Kou Kaichang(School of Materials Science and Engineering,Chang＇an University,Xi＇an 710061 School of Science, Northwestern Polytechnical University, Xi ＇ an 710129)

机构地区：[1]长安大学材料科学与工程学院,西安710061 [2]西北工业大学理学院,西安710129

出　　处：《化工新型材料》2016年第10期76-78,共3页New Chemical Materials

基　　金：陕西省自然科学基础研究计划青年人才项目(2016JQ5099);国家级大学生创新创业训练计划项目(201610710091);长安大学中央高校基本科研业务费专项资金项目(310831151086;310831161017)

摘　　要：以4,4′-二氨基二苯砜(DDS)为二胺单体,3,3′4,4′-二苯酮四羧酸二酐(BTDA)、4,4′-氧双邻苯二甲酸酐(ODPA)分别为二酐单体,制得主链含砜基及桥联结构的聚酰亚胺(PI)模塑粉,考察了结构对PI的性能影响。结果表明,2种PI都具有半结晶聚合物的特性,在氮气中和空气中都具有较好的热稳定性,且熔融温度远低于分解温度。Polyimides containing sulfuryl group and bridge chain were polymerized via 4,4t-diaminodiphenyi sulfone with two dianhydrides-3,3＇4,4＇-benzophenonetetracarboxylic dianhydride （BTDA） and 4,4＇-oxydiphthalic anhydride. The results showed that the polyimides both exhibited semicrystalline character,and the melting temperatures （Tm） were much lower than decomposition temperatures （Td）. At the same time,both had excellent thermal stability in N2 and air.

关 键 词：砜基 桥联 聚酰亚胺 半结晶 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]